Nasdaq · CSTL · stock
Castle Biosciences INC (CSTL) stock price history
Every Nasdaq trading session of Castle Biosciences INC from Jul 25, 2019 to Nov 12, 2026: 1,837 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
CSTL adjusted close, 2019 to 2026
- $97.33
- All time high, 2021
- $44.28
- 52 week high, $17.72 low
- 1,837
- Daily sessions since 2019
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2019 to 2026 series and minute bars.
CSTL key facts
- Castle Biosciences INC (CSTL) closed at $34.50 on Nov 12, 2026 on Nasdaq.
- CSTL's all time high close is $97.33, set on Feb 9, 2021; its all time low close is $11.66 on Jun 5, 2023.
- CSTL's 52 week range is $17.72 to $44.28.
- CSTL returned -0.9% over the year to Nov 12, 2026 and -33.2% over five years.
- Since Jul 25, 2019 CSTL returned +61%, +6.8% a year compounded.
- CSTL's deepest drawdown was -88.0% from Feb 9, 2021 to Jun 5, 2023.
- DataCedar holds 1,837 daily sessions of CSTL history from Jul 25, 2019 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
CSTL price chart, 2019 to 2026
CSTL returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +5.3% |
| 3 months | +9.8% |
| 6 months | +85.2% |
| Year to date | -12.2% |
| 1 year | -0.9% |
| 3 years | +100.8% |
| 5 years | -33.2% |
| 10 years | n/a |
| Since Jul 25, 2019 | +61.2% |
| Compound annual growth, 7.3 years | +6.8% |
CSTL records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $97.33 on Feb 9, 2021
- All time low close
- $11.66 on Jun 5, 2023
- 52 week high
- $44.28 on Jan 26, 2026
- 52 week low
- $17.72 on May 14, 2026
- Deepest drawdown
- -88.0% from Feb 9, 2021 to Jun 5, 2023, not yet recovered
- Best single session
- +52.9% on Jul 7, 2023
- Worst single session
- -48.7% on Jun 5, 2023
- Volatility, 1 year annualised
- 55.0%
- Sessions closing higher, 1 year
- 52%
- Best calendar year
- 2020, +95%
- Worst calendar year
- 2022, -45%
CSTL price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2019 starts on Jul 25, 2019; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $39.02 | $44.28 | $17.72 | $34.50 | -11.3% | 86.9M | 218 |
| 2025 | $26.82 | $42.17 | $14.59 | $38.90 | +46.0% | 112.5M | 250 |
| 2024 | $21.17 | $35.84 | $16.97 | $26.65 | +23.5% | 81.5M | 252 |
| 2023 | $23.67 | $29.59 | $9.26 | $21.58 | -8.3% | 90.4M | 250 |
| 2022 | $42.29 | $48.40 | $15.58 | $23.54 | -45.1% | 66.3M | 251 |
| 2021 | $68.93 | $107.69 | $37.99 | $42.87 | -36.2% | 60.4M | 252 |
| 2020 | $34.95 | $78.39 | $21.01 | $67.15 | +95.4% | 52.3M | 253 |
| 2019 | $20.00 | $39.77 | $15.26 | $34.37 | n/a | 16.5M | 111 |
CSTL monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | $34.50 | -7.2% |
| October 2026 | $37.16 | +4.6% |
| September 2026 | $35.53 | +7.6% |
| August 2026 | $33.03 | +18.0% |
| July 2026 | $28.00 | +17.4% |
| June 2026 | $23.85 | +13.1% |
| May 2026 | $21.08 | -13.9% |
| April 2026 | $24.49 | -0.2% |
| March 2026 | $24.55 | -17.0% |
| February 2026 | $29.57 | -24.9% |
| January 2026 | $39.39 | +1.3% |
| December 2025 | $38.90 | -2.6% |
About the CSTL data
Daily bars. 1,837 sessions from Jul 25, 2019 to Nov 12, 2026, one row per Nasdaq trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Oct 23, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are Nasdaq trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Jul 25, 2019, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/nasdaq%3ACSTL/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
CSTL share price history
